A race marshall sleeps as Ferrari Formula One driver Fernando Alonso of Spain drives past him during the second practice session of the Chinese F1 Grand Prix at the Shanghai International circuit, April 12, 2013. (Photo: Reuters)

Sebastian Vettel of Germany and Infiniti Red Bull Racing is pushed back into garage by his team during practice for the Chinese Formula One Grand Prix at the Shanghai International Circuit on April 12, 2013 in Shanghai, China. (Photo: Getty Images)

Red Bull driver Sebastian Vettel of Germany steers his car wide as the checkered flag is waved to signal the end of the second practice session for the Chinese Formula One Grand Prix in Shanghai, China, Friday, April 12, 2013. (Photo: AP)

Sauber Formula One driver Esteban Gutierrez of Mexico drives out onto the gravel at the second corner during the first practice session of the Chinese F1 Grand Prix at the Shanghai International circuit, April 12, 2013. (Photo: Reuters)

Crew members push the car of Marussia Formula One driver Max Chilton of Britain after it stalled on the track, due to technical problems, during the second practice session of the Chinese F1 Grand Prix at the Shanghai International circuit, April 12, 2013. (Photo: Reuters)

Mercedes Formula One crew members scrub off tyre marks from the garage floor during the second practice session of the Chinese F1 Grand Prix at the Shanghai International circuit, April 12, 2013. (Photo: Reuters)

A crew member washes a tyre from the car of McLaren Formula One driver Sergio Perez of Mexico after the first practice session of the Chinese F1 Grand Prix at the Shanghai International circuit, April 12, 2013. (Photo: Reuters)

Infiniti Red Bull Racing reserve driver Antonio Felix da Costa of Portugal is seen in their team garage during previews to the Chinese Formula One Grand Prix at the Shanghai International Circuit on April 11, 2013 in Shanghai, China. (Photo: Getty Images)

A British Bulldog figurine sits on the car of Sebastian Vettel of Germany and Infiniti Red Bull Racing during previews to the Chinese Formula One Grand Prix at the Shanghai International Circuit on April 11, 2013 in Shanghai, China. (Photo: Getty Images)

Formula One in Slow Motion

A crew member washes a tyre from the car of McLaren Formula One driver Sergio Perez of Mexico after the first practice session of the Chinese F1 Grand Prix at the Shanghai International circuit, April 12, 2013. (Photo: Reuters)